Lozad.js vs Swiper

Head-to-head usage across the sites we track.

Top sites by authority

Lozad.js · Swiper · how many of each technology's sites sit in the web's highest authority tiers

Open Page Rank scores 0 to 10 from the open web link graph; 9+ covers only a few hundred domains worldwide.

By country

Lozad.js · Swiper · share of sites in each country using one or the other

United States 10,997

427,105

India 3,993

239,537

Brazil 3,879

225,038

Japan 14,184

180,131

Germany 4,062

188,085

United Kingdom 5,155

161,180

France 3,033

159,069

Italy 2,747

145,736

Audience countries from the Chrome UX Report, top markets of either technology.

Real user performance

Median site's p75 values from the Chrome UX Report, Sep 2026. Lower is better; green meets Google's "good" threshold. This describes the sites that use each technology, not the technology's own overhead.

Sites that switched

Domains that dropped one technology and adopted the other within about a year, data nobody else gives away free.

All Lozad.js sites · All Swiper sites